Railway coupler



April 22, 195s H. H. WQLFE RAILWAY COUPLER 4 Sheets-Sheet 1 Filed June 5, l1953 e L4 ATTORNEY April 22, 1958 H. H. woLFE 2,831,584

RAILWAY COUPLER Filed June 5, 1953 4 Sheets-Sheet 2 h l n INVENTOR ATTORNEY April 22 1958 H. H. woLFE 2,831,584

RAILWAY COUPLER Fled'June 5, 1953 4 Sheets-Sheet 3 m a W n* w L3 i q1- l R31 'lll gm l a b n H in a I n I JW INVENTOR y a BY ggf@ ILM,

ATTORNEY April z8, 1958 H. H. WOLFE 2,831,584

. RAILWAY COUPLER Filed June 5, 1953 4 Sheets-Sheet 4 INVENTOR l @.JQML

ATTORNEY United States Patent O RAILWAY COUPLER Harry H. Wolfe, Columbus, Ohio, assigner to The Buckeye Steel Castings Company, Columbus, (ihio Application .lune 5, 1953, Serial No. 359,911

22 Claims. (Cl. 213-133) The present invention relates to railway couplers of the knuckle type and more specifically pertains to such a coupler wherein the lock operating mechanism is mounted on an upper portion of the coupler head and the lock is lifted by action of a rotor lever engaging an upper portion of the lock.

When the coupler operating mechanism is mounted on the lower part of the coupler head the major portion of the lock lifting mechanism is in an exposed position under coupler and when dual operating rods are employed for operation from either side of the vehicles the second operating rod avoids interference with the air and signal lines and the 'mounting of the rotor at a higher location on the coupler head provides that one or both operating rods are supported in substantially horizontal positions so that the lock lift is not affected by hopping of the air hose when pulling forces are applied to two mated couplers after they are in bung positions.

A further object of the invention is to provide an anticreep mechanism for the lock which eliminates a number of elements of prior devices and at the same time provides positive acting means preventing inadvertent upward movement of the lock as a result of vertical Vbouncing of the coupler or vertical oscillations in combination with sudden changes in the horizontal movements of the coupler.

Other objects and features of the invention will be readily appreciated by those skilled in the railway coupler art as the present disclosure proceeds and upon consideration of the following detailed description taken in connection with the accompanying drawings wherein a typical embodiment of the invention is disclosed.y

In the drawings:

Fig. 1 is a sectional view of the coupler head taken on the center line of the coupler withl the knuckle and the lock and most of the operating mechanism shown in elevation in the locked position.

Fig. 2 is a transverse sectional view taken on the line 2-2 of Fig. l illustrating the parts in the locked position.

Fig. 3 is a fragmentary sectional viewsimilar to Fig. l with a body portion of the lock shown in section and illustrating action of the anti-creep means.

Fig. 4 is a view similar to Fig. 3 with a portion of l the lock body broken away illustrating the manner in which the rotor lever engages the lock as it is moved to the lock set position.

Fig. 5 is a fragmentary sectional view of the coupler head taken on the center line thereof with a portion of the lock illustrated in section showing the lmanner in which an element of the rotor lever engages the lock when the parts are ,in the full knuckle throw position.

2,831,584 Patented Apr. z2, s

ice

Fig. 6 is a fragmentary elevational view of the lock housing taken from the knuckle side of the coupler.

Fig. 7 is an elevational view of the guard arm side of the lock. y l

Fig. 8 is an elevational view of the rear of the lock.

Fig. 9.is an elevational view of the rotor.

Fig. 10 is a plan view of the rotor.

Fig. 1l is a side elevational view of the rotor lever.

Fig. 12 is a rea-r elevational view of the rotor lever.

The invention is directed to a railway coupler wherein the lock operating mechanism is of the rotary type and located on an upper portion of the coupler head and substantially encased within the lock housing as distinguished from a lock lifting mechanism positioned on a lower portion of the coupler head for maneuvering the leg of the lock during a lock lifting operation. Theinvention also pertains to anti-creep means in association with the top rotary operated lock lifting mechanism. The coupler head is modied to accommodate the mounting of the lock liftin the upper portion of the coupler and within the lock chamber but the coupler head is otherwise of a conventional construction. While the invention isvhereinafter described in connection `with a type F coupler it will be appreciated that the lock operating mechanism and the anti-creep means are suitable for use with other types of couplers. n

Referring 'to the drawings-thereis shown at 10 a coupler headvof a known type which includes a shelf 11 below the contour and a lug 12 projecting forwardly beyond the shelf structure 11. A knuckle 14 of conventional construction isl mounted for swinging movement on the coupler head 10 about the axis of the knuckle pin 16. The knuckle 14 is moved to an open position in the usual manner by action of a knuckle throwerv 17 when the lock is -raised to the full knuckle throw position.

A lock for the coupler is shown at 18 and while the lock is provided with a leg 19 which normally extends downwardly into a lock leg cavity 21 in the usual manner the depending leg is not utilized for lifting the lock. The leg 19 is however employed in the usual manner to attain lock set position and for actuating the knuckle thrower 17 to swing the knuckle 14 from the closed position. A lateral protuberance 22 is provided on the lower portion of the lock leg 19 to prevent transverse shifting of the lock leg between the walls 23 and 24 (Fig. 2)\. The leg 19 of the lock is provided with a notch 26 (Fig. 1) for cooperation with `the knuckle thrower 17 to-hold the lock in the partly raised position when in the lock set position illustrated in Fig. 4.

The body portion of the lock 13 is provided with a cavity 27 which is open at the rear of the lock as best shown in Fig. 8. The cavity 27 does not materially reduce the rigid character of the lock body and it is capable of withstanding the compression forces applied thereto when pulling forces are exerted on the knuckle of the coupler. The face 28 of the lock body is adapted to be engaged by the knuckle tail surface 29 (Fig. 2) when the lock is in the locked position and pulling forces are applied to the knuckle. The top of the cavity 27 is defined by two surfaces 31 and 32 for cooperation with two portions of the rotor lever as hereinafter described. The surface 31 defining the upper end of the knuckle side of the cavity 27 is substantially parallel to the upper surface 30 of the lock body 18 as willbe apparent from a consideration of Fig. 7. The ceiling surface 32 at the guard arm side of the cavity 27 is positioned below the surface 31. Both surfaces 31 and 32 are substantially horizontal when the lock leg 19 is in a vertical position. The rear portion of the surface 32 curves upwardly to provide a convex surface 33 at the mouth of the cavity 27. The side surfaces 35 of the cavity 27 are preferably parallel and vertically disposed as shown in Fig. 8.

The coupler head 10 is provided with a lock housing and the side walls 66 and 43 thereof carry two bosses 37 and 3S which are also integral with rear wall 36 of the lock housing. Each boss 37 and 38 and the associated side wall of the lock housing is provided with a cylindrical shaped bearing opening 39 (Fig. 2) for receiving the shaft portion 42 of a rotor 41 which is shown in detail in Figs. 9 and 10. The side wall 43 of the lock housing is provided with a generally V-shaped notch 44 (Fig. 6) which extends radially outward from the cylindrical opening 39 in the wall 43 and in the boss 37. The notch is disposed upwardly from the cylindrical opening 39 as shown in Figs. l and 6. The rotor 41 is provided with a lug 46 which is generally of triangular shape in transverse section and projects from the periphery of the shaft portion 42 of the rotor intermediate the length o the shaft like part of the rotor. The lug 46 is so dlrnensioned that it may be moved endwise through the notch 44 when the rotor end 47 is introduced endwise through the vopening 39 in the side wall 43 and in the boss 37.

The lock lifting mechanism includes a rotor lever 4S as depicted in Figs. ll and l2. The rotor lever is provided with a loop portion for embracing the rotor and an opening 49 has a segment thereof of cylindrical configuration to encircle a corresponding arcuate part of the rotor 41. A V-shaped aperture 51 is formed in the lever 48 for receiving the V-shaped lug 46 carried by the rotor 41. The rotor lever 48 is thereby keyed or connected to the rotor so that it turns therewith. The free end of the rotor lever is provided with a nose portion 52 which is disposed generally at right angles to the intermediate portion 53. A tip 54 on the nose is convex shaped as shown in Fig. ll. The rotor lever carries a lateral lug 56 which is desirably of cylindrical shape and projects laterally from the free end of the rotor lever 48 adjacent the nose portion 52. The rotor lever is further provided with an abutment member 57 which terminates at its free end in a flat surface 58. The abutment member 57 is provided for engagement with the inner surface of the rear wall 36 of the lock housing to arrest downward swinging movement of the rotor lever. The normal position of the rotor lever 48 is shown in Fig. l and it will be observed that it depends generally from the shaft portion 42 of the rotor.

The operating mechanism is assembled by introducing the end 47 of the rotor 41 in the cylindrical opening 39 in the side wall 43 and in the boss 37 and the rotor is rotatably disposed so that the lug 46 is in alignment with the notch 44. The loop end of the lever 48 is disposed between the adjacent lends of the bosses 37 and 38 and the free end of the rotor lever 48 is disposed in an elevated position as shown in phantom lines in Fig. 3 so that the aperture 51 is in a position to receive the lug 46. There after the rotor 41 is moved towards the guard arm side of the coupler whereby the shaft portions of the rotor are journalled for rotation in the bearing openings 39.

The lug 46 is then accommodated in the aperture S1 and the rotor lever 48 is keyed to the rotor. The rotor lever is maintained in a position approximately midway between the sides of the lock chamber by the inner ends of the bosses 37 and 3S. Thereafter the rotor lever 48 and the rotor are allowed to turn so that the rotor lever 48 swings downwardly from the phantom line position of Fig. 3 until the surface S8 of the abutment member 57 engages the back wall 36 of the lock chamber as shown in Fig. l, The knuckle thrower 17 is next mounted in the coupler head on its trunnion in the usual manuel'. The lock 18 is then inserted in the coupler head and during application of the lock the nose portion 52 is accommodated in the cavity 27. The nose portion 52 is disposed under the ceiling surface 31 whereas the lug 56 is positioned under the ceiling surface 32. The rotor 41 is then turned in a clockwise direction (Fig. l) so that the lock is raised to the lock set position shown in Fig. 4.

All)

Thereafter the knuckle 14 and the knuckle pivot pin 16 are applied.

The rotor shown in Figs. 9 and l0 is provided at one end with an integral eye 61 which is provided with an aperture 62 for receiving the hook shaped end of a coupler operating rod 63 (Fig. 2). lf desired a second eye 64 may be applied to the end portion 47 of the rotor where it projects beyond the side wall 66 of the lock chamber. The eye 64 may be secured to the rotor by means of a rivet or the like 67. lf the coupler is adapted for single operation the eye 64 may be eliminated and an end portion of the rotor removed.

The normal locked position of the parts is shown in Fig. 1 and when it is desired to raise the lock 18 and swing the knuckle to an open position the coupler operating rod 63 or 65 may be turned to rotate the rotor in a clockwise direction in Fig. l. Such rotation of the rotor 41 will cause the nose portion 52 of the rotor lever 48 to move upwardly so that the convex tip 54 (Fig. ll) will engage the surface 31 Within the cavity 27 of the lock. Further clockwise rotation of the rotor lever 48 will cause the lock to be lifted to the lockset position shown in Fig. 4. Continued clockwise rotation of the rotor will cause the lug S6 to engage the surface 32 within the cavity 27 of the lock 1S soon after the lock set position has been passed and further lifting of the lock 18 is effected by the lug 56 engaging the surface 32 whereby the lock is moved to the full knuckle throw position shown in Fig. 5. During upward movement of the lock from the position shown in Fig. 4 to the position illustrated in Fig. 5 the knuckle thrower 17 is actuated in a conventional manner to shift the knuckle 14 to the open position.

Thelock operating mechanism includes positive acting anticreep means. The cavity 27 in the lock 18 is provided with a substantially straight oor surface 68 as shown in Figs. 7 and 8. Adjacent the mouth of the cavity Z7 a generally horizontal surface 69 is provided slightly below the surface 68 and in vertical alignment with the ceiling surface 32. When the lock 18 is thrown upwardly and forwardly the surface 69 at the mouth of the cavity 27 in the lock body engages the lug 56 on the rotor lever 48 as shown in Fig. 3. It will be observed from a consideration of Fig. l that when the lock is in the normal locked position the surface 69 is spaced below the lug 56 and the free end of the rotor lever 48 is substantially vertically below the shaft portion 42 of the rotor. Thus any inadvertentupward movement of the lock 18 will move the surface 69 into engagement with the lug 56. A concave shoulder 71 at the inner end of the surface 69 Vforms -an abutment preventing the lug 56 from swinging into the cavity 27 and positive anti-creep means is thereby provided preventing inadvertent upward movement of the lock.

The eye 61 on the rotor 41 is offset forwardly of the axis of the rotor so that the weight of the rod 63 tends to maintain the rotor lever 43 in an inactive position shown in Fig. l with the abutment member 57 engaging the rear wall 36 of the lock chamber. When a second eyelet 64 is employed its center of gravity is also positioned forwardly of the axis of the rotor 41 so as to assist in maintaining the rotor lever in the inactive position.

While the invention has been shown and described to specic structural features it may be appreciated that .changes may be made in the shape of the elements as well as the overall arrangement. Such modifications and changes in the general organization may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

What I claim and desire to secure by Letters Patent is:

l. In a railway coupler, a coupler head, means on the coupler head forming a lock chamber,v a lock mounted for vertical movements within the lock chamber, said lock having a cavity therein, a rotormounted forrotati'on on the coupler extending into said chamber, a rotor lever within said chamber coupled to the rotor having a free end extending into said cavity, a ceiling surface within said cavity, a nose at therfree end of said lever for engaging said surface to partially raise the lock, a second ceiling surface within said cavity, and means carried by the rotor lever for engaging the second surface to further raise the lock.

2. In a railway coupler, a lock including a body portion, said body portion having a cavity therein, a coupler head having a chamber therein accommodating the body portion of the lock for vertical movements therein, a rotor lever mounted for swinging movement on the coupler head within the lock chamber, rotatable means mounted on the coupler head extending into said lock chamber for rotating the rotor lever, a generally horizontal downward facing surface on the lock within said cavity, a nose at a free end of the rotor lever for engaging said surface during swinging movement of the rotor lever to lift the lock, a second generally horizontal downward facing surface on the lock within said cavity, and a lug carried by the rotor lever for engaging the second surface after a predetermined swinging movement of the rotor lever to further lift the lock.

3. In a railway coupler, a coupler head, a loclrhousing on said coupler head, a lock having a body portion arranged for vertical movements within said lock housing, a rotor extending into the lock housing journalled for rotation on said coupler head, a rotor lever within the lock housing coupled to the rotor and depending therefrom, said lock body having a cavity therein, a nose portion on the rotor lever extending into said cavity, a ceiling surface Within the cavity adapted to be engaged by said nose portion upon swinging movement of the rotor lever, a lug having an arcuate surface extending laterally from the rotor lever adjacent the nose portion, and a second ceiling surface within the cavity laterally of the first ceiling surface adapted to be engaged by said lug after a predetermined swinging movement of the rotor lever.

4. In a railway coupler, a coupler head, a lock housing on said coupler head, a rotor extending transversely through the lock housing journalled for rotation thereon, a rotor lever within the lock housing coupled to the rotor and depending therefrom, a lock having a lock body arranged for vertical movements within said lock housing, said lock body having a cavity therein open at a rear portion of the lock body, a nose portion on the rotor lever arranged substantially at right angles to the length thereof and extending into said cavity, a ceiling surface within the cavity adapted to be engaged by said nose portion upon swinging movement of the rotor lever, a cylindrical shaped lug extending laterally from 'the rotor lever adjacent the nose portion, Iand a second ceiling surface within the cavity below and laterally of the first ceiling surface adapted to be engaged by said lug after a predetermined swinging movement of the rotor lever.

5. In a railway coupler, a coupler head, a lock housing on said coupler head having a rear wall, bearings carried by the lock housing, a rotor extending into the lock housing journalled for rotation in said bearings, a rotor lever within the lock housing coupled to the rotor, an abutment surface on said rotor lever for engaging the rear wall of the lock housing and positioning the rotor lever in a substantially vertical inoperative position, a lock having a lock body arranged for vertical movements within said lock housing, said lock body having a cavity therein open at a rear portion of the lock body, a nose portion on the rotor lever arranged substantially at right angles to the length thereof and extending into said cavity, a ceiling surface within the cavity adapted to be engaged by said nose portion upon swinging movement of the rotor lever, a lug extending laterally'from the rotor lever adjacent the nose portion, and a second ceiling surface within the cavity adapted to beengaged' by said lug after a predetcrminedswinging movement of the rotor lever.

6. In a railway coupler, a coupler head, a lock housing on said coupler head, a rotor extending into the 'lock housing journalled for rotation on the coupler head, a rotor lever within the lock housing coupled to the rotor and depending therefrom in the unactuated position, a lock having a lock body arranged for vertical movements within said lock housing, said lock body having a cavity therein receiving a free end of the rotor lever, a lug extending laterally from the rotor lever-adjacent said free end, and an anti-creep surface on said lock body at the bottom of said cavity for engaging said lug upon inadvertent upward movement of the lock.

7. In a railway coupler, a coupler head, a lock housing on said coupler head including a generally vertical wall, a rotor extending into the lock housing journalled for rotation on the coupler head, a rotor lever within the lock housing coupled to the rotor and depending therefrom in the inactive position, a lock having a lock body arranged for vertical movements within said lock housing, said lock body having a cavity therein receiving a free end of the rotor lever, a lug extending laterally from said rotor lever adjacent said free end, an anti-creep surface on the lock body, and an abutment on the rotor lever for engaging said wall of the lock housing and positioning the lug over said anti-creep surface in lthe inactive position thereof.

8. A lock for a railway coupler comprising, a lock body having a cavity therein open at a rear face of the lock body, a downward facing surface delining the top of one side of `said cavity, a second downward facing surface dening the top of the remainder of said cavity positioned below the irst surface, an upward facing surface at the bottom of said cavity in a vertical plane of the second downward facing surface forming an anti-creep abutment on the lock body, and a leg depending from the lock body.

9. A rotor lever for a railway coupler comprising,l a loop shaped end portion on the lever having an opening therein of circular .shape throughout more than one hundred and eighty degrees, said loop shaped end having an aperture therein extending from said opening towards the other end of said lever, a nose portion at the other end of the rotor lever arranged generally at right angles to the length of the lever, and a lug projecting laterally from the rotor lever adjacent said nose portion.

l0. A rotor lever for a railway coupler comprising, a loop shaped end portion on the lever having an opening therein of circular shape throughout more than one hundred and eighty degrees, said loop shaped end having a V-shaped aperture therein extending from said opening with the apex of the aperture directed towards the other end of said lever, a nose portion at the other end of the rotor lever arranged generally `at right angles to the length of the lever, a convex tip dening the end of said nose portion, and a cylindrical shaped lug projecting laterally from the rotor lever adjacent said nose portion.

ll. A rotor lever for a railway coupler comprising, a loop shaped end portion on the lever having an opening therein of circular shape throughout a segment thereof, said loop shaped end having an aperture therein extending from said opening, a nose portion at the other end of the rotor lever arranged generally at right angles to the length of the lever, a lug projecting laterally from the rotor lever adjacent said nose portion, and an abutment member on the lever adjacent the loop shaped end portion.-

12. In a railway coupler, a coupler head, alock housing on the coupler head, a rotor extending into the lock housing journalled for rotation on said coupler head, a rotor lever within said housing coupled to the rotor lever and depending substantially vertically therefrom in an inactiveposition of the rotor lever, a lock body arranged for vertical movements within said lock housing, said lock body having cavity therein with an open mouth at one face thereof for receiving .a free end of said rotor lever, a lug carried by a free end of said rotor lever, an upward facing anti-creep surface on the lock body within the cavity and adjacent said mouth for engaging said lug after a slight inadvertentupward movement of the lock body, and a shoulder at an inner end of said anticreep surface preventing said lug and the rotor lever from moving further into the cavity.

13. In a railway coupler, Va coupler head, a lock housing on die coupler head, a rotor extending into the lock housing journalled for rotation on said coupler head, a rotor lever within said housing coupled to the rotor lever and depending substantially vertically therefrom in an inactive position of the rotor lever, a loci; body arranged for vertical movements within said lock housing, said lock body having acavity therein with an open mouth at one face thereof for receiving a free end of said rotor lever, a lug having a `convex surface thereon carried by the free end of said rotor lever, an upward facing anti-creep surface on the lock body within said cavity adjacent the mouththereof for engaging the convex surface on said lag after a slight upward movement of the lock body while the rotor lever remains in said inactive position. and a concave shoulder on the lock body within said cavity defining an inner end of said anti-creep surface limiting inward swinging movement of the rotor lever and the lug.

14. A lock for a railway coupler comprising, a lock .body having a cavity therein with an open mouth at a rear face of the lock body, a downward facing surface defining the top of one side portion of said cavity, a second downward facing surface defining the top of the remaining portion of said cavity positioned below the first surface, a floor surface defining the bottom of the cavity, and a generally horizontal anti-creep surface adjacent the mouth of the cavity positioned below said oor surface and in substantially vertical alignment with said second downward facing surface.

l5. A lock for a railway coupler comprising, a lock body having a cavity therein with an open mouth at a rear face of the lock body, a downward facing surface defining the top of one side portion of said cavity, a second downward facing surface defining the top of the remaining portion of said cavity positioned below the first surface, a door surface defining the bottom of thc cavity, a generally horizontal anti-creep surface adjacent the mouth of the cavity positioned below said floor surface and in the vertical plane of said second downward `lfacing surface, and a shoulder dening an inner end of said anti-creep surface.

16. In a railway coupler, a lock including a body portion, said body portion having a cavity therein, a downward facing surface on said body within said cavity, a coupler head having a chamber within an upper portion thereof for accommodating the body portion of the locl-z in positions above the locked position thereof, a rotor lever mounted within said chamber for swinging movement on the coupler head from a substantially vertical -inactive position, a free end portion on and integral with -said rotor lever extending into said cavity for engaging said downward facing surface to lift said lock, and means .connected to the rotor lever extending outside the coupler head for swinging the rotor lever. i l

17. In a railway coupler, a coupler head, means on the coupler head forming a lock chamber within an upper portion of the head, a lock, a body portion on the lockimounted for vertical movements upwardly into said flclck charnber, said body having a cavity therein open at lone side thereof, bearings on the coupler head within the lock chamber, Va rotor mounted for rotation incsaid bearings, a groter Ylever within said lock chamber connected to the rotor normally depending substantially vertically therefrom, a rigid free end on the rotor lever extending into said cavitythrough said side opening for engaging and lifting the lock.

l18. In a railway coupler, a coupler head, means on the coupler head .providing a lock chamber within an upper portion thereof, a lock including a body portion mounted for movementupwardly into said lock chamber, said body portion of the lock having a cavity therein open at a rear face of the body portion, bearings on the coupler head adacent the lock chamber, a rotor mounted for rotation in said bearings, a one-piece rotor lever within said chamber keyed to the rotor `and having a free end extending into said cavity, a ceiling surface on the body portion of the loci; within said cavity forward of said rear face, and a nose on the free end of the rotor lever for engaging said ceiling surface and lifting the lock.

19. in a railway coupler, a lock including a body portion, said body portion having a cavity therein, a downward facing surface on said body within said cavity, a coupler head, a lock housing on an upper portion of the coupler head for accommodating said body portion when the lock is above the locked position, a rotor lever encased entirely within said housing and mounted for swinging movement on the coupler head from a substantially vertical inactive position, a free end portion on said rotor lever extending into said cavity for engaging said downward facing surface to raise the lock, and means connected to the rotor lever extending outside said housing yfor swinging the rotor lever.

20. In a railway coupler, a coupler head, a housing on an upper portion of the coupler head, a lock including a body portion mounted for vertical movements upwardly into said housing, said body portion of the lock having a cavity therein open at one side of the body portion, a rotor extending into said housing and mounted for rotation on the coupler head, a rotor lever encased within said housing and keyed to the rotor, a nose at a free end of the rotor lever extending into said cavity, a ceiling surface on the body portion of the lock within said cavity, and a convex tip on said nose for engaging said ceiling surface and lifting the lock.

21. In a railway coupler, a coupler head, means on the coupler head forming a lock chamber within an upper portion of the head, a lock, a body portion on the lock mounted for vertical movements into said lock chamber, said body portion having a cavity therein open at one side thereof, a rotor extending into said chamber mounted for rotation on the coupler head, a rotor lever within said lock chamber connected at one end to the rotor depending substantially vertically therefrom in the inactive position of the rotor lever, a free end portion on the rotor lever disposed at an angle to an intermediate portion of said rotor lever, and said free end portion extending into said cavity through said opening for engaging and lifting the lock.

22. A lock for a railway coupler comprising, a lock body having a knuckle side face and a rear face, said body having a cavity therein open at said rear face, an elongated liat ceiling surface defining the top of a portion of the cavity extending parallel to the knuckle side face of the lock body, a second elongated ceiling surface dening the top of the remaining portion of the cavity, said second ceiling surface being disposed below the first ceiling surface with its major dimension extending parallel to the length of the first ceiling surface, and a leg depending from said lock body.

References Cited in the tile of this patent UNITED STATES PATENTS 1,323,291 Kinne Dec. 2, 1919 1,783,655 Kelso Dec. 2, 1930 v1,897,279 Richards Feb. 14, 1933 2,148,364 Barrows T Feb. 2l, 1939 

